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feat(gamestream): pen P2 — SS_PEN/SS_TOUCH ingest, featureFlags advertised on capable hosts

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The Moonlight leg of design/pen-tablet-input.md §4: DESCRIBE now advertises
SS_FF_PEN_TOUCH_EVENTS wherever pen injection exists (Linux+uinput, same gate
as HOST_CAP_PEN — elsewhere the flag stays 0 and Moonlight keeps client-side
mouse emulation exactly as today). SS_PEN packets merge over last-known state
into state-full PenSamples (BUTTON_ONLY per spec carries no position; unknown
contact pressure 0.0 inks at full scale; UP keeps proximity only for clients
that demonstrated hover) and drive the same PenTracker→VirtualPen chain as the
native plane — Moonlight iOS + Apple Pencil now exercises the full injection
path end to end. SS_TOUCH forwards as wire touch on a synthetic 65535² surface
with CANCEL_ALL replayed per tracked contact. No stroke timeout on this plane:
ENet is ordered/reliable and Moonlight doesn't heartbeat a stationary pen.
Packet layouts pinned against moonlight-common-c Input.h/Limelight.h upstream.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
enricobuehler
2026-07-23 16:18:31 +02:00
co-authored by Claude Fable 5
parent aca5aa9993
commit b192825869
5 changed files with 537 additions and 2 deletions
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crates/punktfunk-host/src/gamestream/mod.rs
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@@ -18,6 +18,8 @@ mod input;
mod mdns;
mod nvhttp;
mod pairing;
/// Moonlight `SS_PEN`/`SS_TOUCH` → the native pen model / wire touch (design/pen-tablet-input.md §4).
mod pen;
mod rtsp;
mod serverinfo;
mod stream;